Indonesia: Earthquake: 2026/08/15

Period	2026/08/15
Country or District	Indonesia
Event Type	Earthquake
Outline	On 15 August 2026 at 05:58 local time (WITA; 14 August 2026, 21:58 UTC), a magnitude Mw 7.7 earthquake struck the Flores Sea off eastern Indonesia. The epicentre was located 68 km NNW of Ende, Flores Island, in East Nusa Tenggara province, at a shallow depth of about 10 km (USGS). Indonesia's Meteorology, Climatology and Geophysical Agency (BMKG) issued a tsunami warning for East Nusa Tenggara, West Nusa Tenggara, South Sulawesi and Southeast Sulawesi; tsunami waves of 19-30 cm were observed. The mainshock was followed by aftershocks of M5.9, M5.6 and M6.1. Very strong shaking was felt by more than 500,000 people on Flores Island.

Related Links

Report/Articles

ADRC Large Scale Disaster Report
According to the BNPB, as of August 26, there were 105 fatalities, 1,678 people injured or feeling unwell, 179,037 evacuees, and 81,436 damaged homes. The AHA Center’s “ASEAN Weekly Disaster Bulletin” cited BNPB figures as of 9:00 a.m. (WIB) on August 31, reporting 120 deaths, 1,658 injuries, and approximately 188,673 evacuees. The death toll stood at 47 on August 16, 69 on August 18, 100 on August 24, 105 on August 26, and 120 on August 31. On the day of the earthquake, the ADRC, acting on behalf of BRIN, requested assistance from both Sentinel Asia and the International Charter.

IFRC, PMI 2026/08/24
IDN: Earthquake - 08-2026 - Field Report Update 3: M7.7 East Nusa Tenggara Earthquake #4 (2026-08-24)

BNPB 2026/08/23
The National Support Post recorded 87 deaths as of Saturday (August 22nd) at 4:00 PM WIB.

Antara 2026/08/19
According to the BNPB, the death toll has reached 71 as of Wednesday (August 19), while the number of evacuees stood at 59,647.

BNPB 2026/08/16
The impact of the 7.7 magnitude earthquake in NTT has brought the death toll to 53.

Basarnas, August 15
40 dead, 50 injured (August 15, 6:30 p.m. WITA); approximately 2,000 people have evacuated voluntarily 54 homes completely destroyed, 9 partially destroyed, and 11 partially damaged; 5 health facilities, 1 school, 3 religious facilities, and 6 government buildings were damaged

AP 2026/08/15
Magnitude 7.7 earthquake strikes off Indonesia’s coast, killing at least 38 and toppling buildings

BNPB 2026/08/15
Fourteen people were killed (6 in Manggarai Regency, 5 in East Manggarai Regency, and 3 in Sikka Regency), 2 were seriously injured, and 11 sustained minor injuries. Approximately 2,000 people evacuated on their own. Fifty-four homes were completely destroyed, nine were partially destroyed, and 11 sustained partial damage. Five health facilities, one educational facility, one Bulog warehouse, three religious facilities, and six government buildings were damaged.

Geographycal Data

International Charter 2026/08/15
Earthquake in Indonesia

ECHO 2026/08/18
Indonesia | 7.7 M earthquake and tsunami of 14 August - DG ECHO Daily Map | 18/08/2026

Sentinel Asia 2026/08/15
Earthquake in Flores region, Indonesia on 15 August 2026

USGS 2026/08/15
M 7.7 - 68 km NNW of Ende, Indonesia, Date: 2026-08-14 21:58:21 (UTC), Depth:10.0 km